Small Drilled Universal Carboy Stopper

Clean and sanitize the stopper before use.

Insert a compatible fermentation airlock into the drilled opening.

Press the stopper securely into the opening of a compatible glass carboy.

Ensure the stopper is firmly seated to create a proper fermentation seal.

Monitor airlock activity throughout fermentation.

Clean thoroughly after use and allow to dry before storage.

• One Small Drilled Universal Carboy Stopper

A drilled carboy stopper is used to seal fermentation vessels while allowing CO2 produced during fermentation to vent safely through an airlock.

This universal stopper is well suited for:

• Beer fermentation
• Wine fermentation
• Mead fermentation
• Hard cider fermentation
• Secondary fermentation setups
• Aging and conditioning vessels

The tapered universal design helps create a snug fit across several fermenter sizes commonly used in homebrewing.

This universal stopper can also be used for:

• Replacing worn fermenter stoppers
• Airlock-based fermentation setups
• Fermentation vessel upgrades
• Homebrew equipment replacements

The integrated lip helps prevent the stopper from accidentally falling into the fermenter during installation or removal.

• Material: BPA-free silicone
• Style: Universal tapered stopper
• Airlock Opening: Pre-drilled
• Recommended Fermenter Sizes:
  -3 gallon glass carboys
  -5 gallon glass carboys
  -6 gallon glass carboys
  -6.5 gallon glass carboys
• Not Recommended For:
  -1 gallon carboys
  -The Catalyst Fermentation System
• Reusable: Yes